JP2018142913A5

JP2018142913A5 - Broadcast signal transmitter

Info

Publication number: JP2018142913A5
Application number: JP2017037331A
Authority: JP
Filing date: 2017-02-28
Publication date: 2020-01-16
Anticipated expiration: 2037-02-28

Description

２０１５年７月に総務省より「４Ｋ・８Ｋロードマップに関するフォローアップ会合
第二次中間報告」が公表された。この中間報告のロードマップは、２０１８年にＢＳ放送やＣＳ放送において、４Ｋ放送や８Ｋの放送を実用化（本放送）を始めるためのロードマップである。４Ｋ放送や８Ｋ放送の特徴は、映像解像度のみならず、色域の拡大、階調の拡大、フレームレートの拡大、さらに昨今話題の輝度の表現範囲の拡大であるＨＤＲ(High Dynamic Range)があげられる。 In July 2015, the Ministry of Internal Affairs and Communications "Follow-up meeting on 4K / 8K roadmap"
The Second Interim Report has been published. The roadmap of the interim report is a roadmap for starting practical use (main broadcast) of 4K broadcast and 8K broadcast in BS broadcast and CS broadcast in 2018. The features of 4K and 8K broadcasting are not only video resolution but also color gamut, gradation , frame rate, and HDR (High Dynamic Range), which is an expression range of brightness that has been talked about recently. Can be

本実施形態によれば、映像エンコーダの出力、音声エンコーダの出力及び制御情報を生成する付属データ生成部の出力を多重化する多重化部、前記多重化部の出力を放送信号として送信する送信機を含む装置であって、２Ｋ放送として、１０８０／Ｉまたは１０８０／６０／Ｐの映像信号を前記放送信号に含めて伝送する場合、前記映像信号のコーディク種別はハイエフィシェンシービデオコーディング(High Efficiency Video Coding: ＨＥＶＣ）を採用しており、前記映像信号のダイナミックレンジを指定する情報を前記ＨＥＶＣの映像ストリームに挿入されるビデオユーザビリティーインフォメーション(Video_usablity_information：ＶＵＩ）に記述する制御手段を用いる放送信号送信装置において、
前記制御手段が、
前記放送信号に対して前記ＶＵＩとは異なる伝送制御信号を配置する手段と、
前記伝送制御信号内にも、前記ＶＵＩ内の伝送特性に対応した情報が配置され、前記伝送特性に対応した情報とは異なる位置に、前記映像信号のダイナミックレンジが、ハイダイナミックレンジ（High Dynamic Range：ＨＤＲ）であるか否かを示す識別用の情報を記述し、前記識別用の情報では、さらにコンポーネントタイプ（Component_Typ)によりアスペクト比も識別させる手段と、を備えることを特徴とする放送信号送信装置を提供できる。 According to the present embodiment, a multiplexing unit that multiplexes an output of a video encoder, an output of an audio encoder, and an output of an attached data generation unit that generates control information, and a transmitter that transmits an output of the multiplexing unit as a broadcast signal And transmitting a 1080 / I or 1080/60 / P video signal as a 2K broadcast including the video signal in the broadcast signal, the codec type of the video signal is High Efficiency Video Coding (High Efficiency Video Coding). Broadcast signal transmission using control means that adopts Video Coding (HEVC) and describes information specifying the dynamic range of the video signal in video usability information (Video_usablity_information: VUI) inserted into the video stream of the HEVC. In the device,
The control means,
Means for arranging a transmission control signal different from the VUI for the broadcast signal;
Information corresponding to the transmission characteristic in the VUI is also arranged in the transmission control signal, and the dynamic range of the video signal is set at a position different from the information corresponding to the transmission characteristic. : HDR) is described, and the identification information further includes means for identifying the aspect ratio by a component type (Component_Typ). Equipment can be provided.

まず本実施形態を発案するに至る概要について説明する。図１は、映像フォーマットの進化の方向性を示した図である。進化の方向性は、解像度の進化と表現範囲の進化との大きく２つに分かれる。解像度の進化は、さらに２次元解像度（平面）の進化、３次元解像度（階調）の進化および４次元解像度（フレームレート）の進化の３つの進化の方向性がある。もう１つの進化の方向性である表現範囲の進化には、色の表現範囲の進化と輝度の表現範囲の進化の２つの方向性がある。 First, an outline for devising the present embodiment will be described. FIG. 1 is a diagram showing the direction of the evolution of the video format. The direction of evolution can be broadly divided into two: resolution evolution and expression range evolution. The evolution of resolution has three directions: evolution of two-dimensional resolution (plane), evolution of three-dimensional resolution ( gradation ), and evolution of four-dimensional resolution (frame rate). The expression range evolution, which is another direction of evolution, has two directions: evolution of a color expression range and evolution of a luminance expression range.

Claims

A device that includes a transmitter that multiplexes an output of a video encoder, an output of an audio encoder, and an output of an attached data generation unit that generates control information, and a transmitter that transmits an output of the multiplexing unit as a broadcast signal, When transmitting a 1080 / I or 1080/60 / P video signal as a 2K broadcast while including the video signal in the broadcast signal, the codec type of the video signal adopts High Efficiency Video Coding (HEVC). A broadcast signal transmitting apparatus using control means for describing information specifying a dynamic range of the video signal in video usability information (Video_usablity_information: VUI) inserted into the HEVC video stream;
The control means,
Means for arranging a transmission control signal different from the VUI for the broadcast signal;
Information corresponding to the transmission characteristic in the VUI is also arranged in the transmission control signal, and the dynamic range of the video signal is set at a position different from the information corresponding to the transmission characteristic. : HDR), means for describing identification information indicating whether or not the information is HDR, wherein the identification information further identifies an aspect ratio by a component type (Component_Typ);
A broadcast signal transmitting device comprising: